After taking the "soul fragrance" for some time, Xuan's sleeping schedule has become "very poor" and he's worried about how he'll get used to it. He wants to stop taking it, or else he won't have the energy to go to bed early and wake up early. He thinks too much about this, and decides that it's a big taboo for a martial artist to have a bad sleep routine. He decides to invent a way to use the "secret weapon" that he spits out of his mouth. First, he wants to use a "mist form of soul fragrance" to seal the opening of a walnut shell, so that the secret weapon doesn't poison him. Then, he thinks, he can use "the mist form" to blow up the walnut shell and kill the enemy. The "master of poison" thinks this is a great idea, but he has a question: why should he use his hands to shoot the weapon instead of using his mouth? He thinks that if he were about to beheaded, he would have to use his own hands to do so, but now that he has the "special trick" of spitting a weapon, he'd be able to survive.